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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 500MA 6-DFN
- Series：-
- Mfr：Dioo Microcircuits Co., Ltd.
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：0.55V
- Voltage - Output (Max)：5.5V
- Voltage Dropout (Max)：0.83V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：45 µA
- Current - Supply (Max)：-
- PSRR：64dB (1kHz)
- Control Features：Current Limit, Enable
- Protection Features：Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The DIO7976APADJCD6 is a 500 mA ultra-low noise and high PSRR adjustable LDO from Dioo Microcircuits. It operates with an input voltage range of 1.7 V to 6.0 V and provides an adjustable output voltage from 0.55 V to 5.5 V. The device features a typical quiescent current of 27 µA and shutdown current of 0.1 µA. It includes an active output discharge mechanism and a push-pull power-good (PG) output. Stability is maintained with ceramic capacitors as small as 1 µF. The component is housed in a DFN2*2-6 package and supports an operating junction temperature range from -40°C to +125°C.
Feature Summary
- Ultra-low noise performance suitable for RF and analog circuits
- High power supply rejection ratio (PSRR) across frequency ranges
- Push-pull power-good output for status indication
- Active output discharge for rapid shutdown
Applications
- Battery-powered equipment
- Wireless LAN devices
- Smartphones and tablets
- Cameras, DVRs, STBs, and camcorders
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type, output configuration, and thermal rating. Ensure compatibility with system voltage requirements and load conditions before integration. Confirm availability through authorized distribution channels as supply status may vary.
Selection Notes
Select this component for applications requiring low noise and high accuracy in portable electronics. The adjustable output allows flexibility for post-regulation needs. Consider the DFN2*2-6 package size for space-constrained designs. Ensure adequate thermal management given the junction-to-ambient resistance characteristics.
Part Context
This part belongs to the DIO7976 family of low-dropout regulators designed for high-performance analog and RF applications. The series offers various fixed and adjustable output options with different power-good configurations. The 'AP' suffix indicates a push-pull power-good output, while 'ADJ' denotes an adjustable voltage setting capability.
Replacement Considerations
Direct substitutes include other parts within the DIO7976 family such as DIO7976AOADJCD6 or DIO7976BOADJCD6, depending on the required power-good topology and discharge behavior. Verify pinout and electrical specifications match before substitution.
